1*1031c584SApple OSS Distributions #include <darwintest.h>
2*1031c584SApple OSS Distributions #include <sys/socket.h>
3*1031c584SApple OSS Distributions #include <net/if.h>
4*1031c584SApple OSS Distributions #include <sys/ioctl.h>
5*1031c584SApple OSS Distributions
6*1031c584SApple OSS Distributions static void __unused
create_interfaces(const char * prefix,int num)7*1031c584SApple OSS Distributions create_interfaces(const char *prefix, int num)
8*1031c584SApple OSS Distributions {
9*1031c584SApple OSS Distributions static int fd = -1;
10*1031c584SApple OSS Distributions
11*1031c584SApple OSS Distributions if (fd == -1) {
12*1031c584SApple OSS Distributions fd = socket(PF_INET, SOCK_STREAM, 0);
13*1031c584SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(fd, "socket");
14*1031c584SApple OSS Distributions }
15*1031c584SApple OSS Distributions for (int i = 0; i < num; i++) {
16*1031c584SApple OSS Distributions struct ifreq ifr = {};
17*1031c584SApple OSS Distributions
18*1031c584SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
19*1031c584SApple OSS Distributions int ret = ioctl(fd, SIOCIFCREATE, &ifr);
20*1031c584SApple OSS Distributions if (errno == EEXIST) {
21*1031c584SApple OSS Distributions continue;
22*1031c584SApple OSS Distributions }
23*1031c584SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFCREATE");
24*1031c584SApple OSS Distributions memset(&ifr, 0, sizeof(ifr));
25*1031c584SApple OSS Distributions sprintf(ifr.ifr_name, "%s%d", prefix, i);
26*1031c584SApple OSS Distributions ret = ioctl(fd, SIOCIFDESTROY, &ifr);
27*1031c584SApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(ret, "SIOCIFDESTROY");
28*1031c584SApple OSS Distributions if (i % 100 == 0) {
29*1031c584SApple OSS Distributions printf("created %s%d\n", prefix, i);
30*1031c584SApple OSS Distributions }
31*1031c584SApple OSS Distributions }
32*1031c584SApple OSS Distributions }
33*1031c584SApple OSS Distributions
34*1031c584SApple OSS Distributions
35*1031c584SApple OSS Distributions T_DECL(test_ifnet_overflow,
36*1031c584SApple OSS Distributions "Verify that we don't crash when we create many interfaces",
37*1031c584SApple OSS Distributions T_META_CHECK_LEAKS(false))
38*1031c584SApple OSS Distributions {
39*1031c584SApple OSS Distributions #if 1
40*1031c584SApple OSS Distributions T_SKIP("Not stable yet");
41*1031c584SApple OSS Distributions #else
42*1031c584SApple OSS Distributions create_interfaces("vlan", 32768);
43*1031c584SApple OSS Distributions create_interfaces("feth", 32768);
44*1031c584SApple OSS Distributions #endif
45*1031c584SApple OSS Distributions }
46